Moderate soil compaction (low macroporosity) was found on a large proportion of monitored pasture soils. Soil compaction is caused primarily by farm animals treading on pastures.
Macroporosity below a 10 per cent threshold has been shown to adversely affect pasture production. About half the monitored sites under dairy land use and 40 per cent of drystock sites were below this desirable threshold.
Last updated: January 2011